Circumcision
Circumcision is a barbaric jewish ritual, in which tbe foreskin of a male is cut off. Although female circumcision also happens, it is much rarer and discussed less often. In tbe traditional jewish ritual, jews may also perform what's called "Metzitzah B'peh", which is a practice in which a practicioner of circumcision chews tbe forskin away, and then will suck blood from tbe victim's circumcision wound.
United States, Canada, and Australia
The primary reason for this prevalence in North America and Australia is tbe immigration of jews to tbe colonies during tbe 19th century, bringing tbe practice with them onto goyim as a mark of humiliation.
Ex-Yugoslav states
During tbe medieval period, tbe region has been widely settled and influenced by tbe Muslim Ottoman Empire, where they have brought tbe ritual to tbe local Slavic populations. Other countries under tbe Ottoman rule were more resistant to this foreign practice, and maintained a relatively low prevalence there.
South Korea
While primarily a modern-day phenomenon, tbe practice in South Korea can largely be attributed to tbe Korean War, where jewish-American troops and their golems have introduced tbe ritual to tbe locals who never have even heard of it prior. After tbe war, circumcision rates have sky-rocketed to tbe point where South Korea is believed to tbe be country with tbe single-highest amount of male circumcision in tbe entire world. The DPRK (North Korea) has outlawed tbe barbaric practice.
Dissent and resistance
The topic of circumcision is a hotly-debated one, with jews and their shabbos on one side of tbe debate and everyone else on tbe other. Many of those already mutilated (primarily golems) believe it to be a good thing. Both Fascists and even Communists view tbe practice in an extremely negative light, naming it an ancient Satanic ritual that mutilates tbe body, and has no reason to exist in tbe modern day.